中文摘要：

采用一步溶剂热法合成纤锌矿结构CuInS2（W-CIS）纳米粉体,并对其生长形成机理进行了研究。利用XRD、FE-SEM及EDS对W-CIS纳米晶的结构和形貌以及元素组成进行分析,研究了溶剂热合成过程中的铜源、硫源、反应温度及反应时间对CuInS2纳米粉体物相及形貌的影响。结果表明：以Cu Cl2·2H2O或Cu（CH3COO）2·H2O、In Cl3·4H2O和硫脲为原料,聚乙二醇-400、乙二胺为溶剂于200℃下反应2 h可以成功合成出结晶性良好的CuInS2纳米片,直径约为300 nm,厚度大约为10~20 nm。通过研究发现,乙二胺对形成纤锌矿结构CuInS2起着关键的作用,并且该粉体对亚甲基蓝的降解率可达75.04%。

英文摘要：

The synthesis and formation mechanism of the wurtzite CuInS2（ W-CIS） nanocrystals were investigated by one-pot solvothermal method. The crystal structure,the morphology and the composition of the CuInS2 were characterized by XRD,FE-SEM and EDS. The influence of the copper salts,sulfur sources,the reaction temperatures and time on phase and morphology of the W-CIS were investigated,respectively. The results indicate that the W-CIS nanocrystals with well crystallinity can be synthesized at200 ℃ for 2 h,using the CuCl2· 2H2O,InCl3· 4H2O and thiourea as the raw materials,the polyethylene glycol and ethanediamine as the solvents. The as-synthesized W-CIS nanocrystals show the diameter of about 300 nm and the thickness of about 10-20 nm. The ethylenediamine plays a key role in the process of forming the wurtzite CuInS2 nanocrystals and W-CIS could degrade 75. 04% of the methylene blue.